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November 24th, 2020, 08:41 PM #1
Need help type of caliber friends gun
My friend just inherited a gun and it states 9 m/m (380). Is it 9mm or 380?
I’ll post a picture when I get home. It’s a 1911 Llama"I prefer dangerous freedom over peaceful slavery." Thomas Jefferson
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November 24th, 2020, 08:45 PM #2
Re: Need help type of caliber friends gun
Not positive, but sounds like .380ACP which is also known as 9mm Kurz (short) or 9x17. Whereas 9mm Luger or Parabellum is 9x19. 9mm Kurz is the more European name of what us Americans call the .380 Automatic Colt Pistol.
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November 24th, 2020, 08:50 PM #3
Re: Need help type of caliber friends gun
could be wrong, but a 380 is a shorter 9mm. Kinda like a .22cb is shorter then .22lr
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November 24th, 2020, 08:50 PM #4
Re: Need help type of caliber friends gun
Fortuna audaces iuvat
"Who is John Galt?"
Deus Vult
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November 24th, 2020, 10:23 PM #5
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November 24th, 2020, 11:33 PM #6
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November 25th, 2020, 07:57 AM #7
Re: Need help type of caliber friends gun
Here's the photo---sorry for the late reply and thanks for the awesome explanations:
9MM-380.jpg"I prefer dangerous freedom over peaceful slavery." Thomas Jefferson
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November 25th, 2020, 04:19 PM #8
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November 25th, 2020, 04:55 PM #9Grand Member
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Re: Need help type of caliber friends gun
Correct. A .380 has a smaller rim. When I am reloading every now and then a .380 case gets mixed up with the 9 mm and it usually pops out of the shellholder or jams something up. I don't think any of the .380 cases made it to the end (which is good).
FYI there is another 9mm out there that some people mix up. The 9x18 Makarov. It uses a slightly larger diameter bullet (.365 vs .355) but the rim is the same as a standard 9mm. All you have to do to make 9x18 brass from a 9mm case is to size it and trim it 1mm. Performance wise the 9x18 is slightly hotter than the .380.
So summing it up what most of us just call a "9mm" is officially a 9mm Parabellum or a 9x19 (metric designation). But for some reason it is called a 9mm Luger in the US. And don't forget the 9mm Nato that is loaded to a higher pressure. Consider it a 9mm+p so don't shoot it in and older pistol. Clear?
The 9x18 Makarov is 1mm shorter with a larger diameter bullet, and the .380 is a 9x17 with a smaller diameter case.
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November 25th, 2020, 06:02 PM #10
Re: Need help type of caliber friends gun
When he see's the price of 380 ammo he'll wish it was 9mm luger
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